Confirmation of a large group

What power and what a sound! the first time I listened to this disc (forty years already and dust) it was
shock and emotion is still intact.
The Led Zep style is there in this second installment; after the first album (blues / rock)
powerful and raw, the sound of the second album is refined and provides more personal pieces that are today
classic (Whole lotta love, Heartbreaker, Bring it on home and many others) sound and Led Zep style are born with this album.
An album to own (like any other for that matter) into his nightclub, this is called a classic.